404230443431 has 4 divisors (see below), whose sum is σ = 405965338272. Its totient is φ = 402495548592.

The previous prime is 404230443391. The next prime is 404230443437. The reversal of 404230443431 is 134344032404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404230443431 - 2¹⁸ = 404230181287 is a prime.

It is a super-2 number, since 2×404230443431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404230443437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867447071 + ... + 867447536.

It is an arithmetic number, because the mean of its divisors is an integer number (101491334568).

Almost surely, 2^404230443431 is an apocalyptic number.

404230443431 is a deficient number, since it is larger than the sum of its proper divisors (1734894841).

404230443431 is a wasteful number, since it uses less digits than its factorization.

404230443431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734894840.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 404230443431 its reverse (134344032404), we get a palindrome (538574475835).

The spelling of 404230443431 in words is "four hundred four billion, two hundred thirty million, four hundred forty-three thousand, four hundred thirty-one".